Phonograph.



Patented Oct. 8, I9UI.

H. J. HAGEN 8|. G. MGINTDSH.

v PHUNOGRAPH. (Application filed Nov. 16, 1900.)

(No Model.)

willmeoow i y UNITED STATES PATENT OFFICE.

HENRY J. HAGEN AND GEORGE MCINTOSH, OF NEWARK, NE\V JERSEY, ASSIGNORS TO JOSEPH NEVCOMB BLAOKMAN, OF EAST ORANGE, NEW

JERSEY.

PHONOGRAPH.

SPECIFICATION forming part Of Letters Patent No. 684,370, dated October 8, 1901.

Application filed November 16, 1900. Serial No. 36,708. (No model.)

To all whom it may concern:

Be it known that we, HENRY J. HAGEN and GEORGE MoINTosH, citizens of the United States, residing at Newark, in the county of Essex and State of New Jersey, have made a new and useful Invent-ion in Phonographs, of which the following is a specification.

Our invention is directed to an improvement in phonographs in which the recording [0 stylus is adapted to follow the inequalities of the surface of a phonograph-record; and it has forits objects, first, to diminish the weight of the parts to which the recording-stylus is attached, and, second, to so arrange the parts of the entire apparatus that allof the soundwavcs that enter the sound-conveying tube shall pass directly to the diaphragm from the source of sound and in such manner that by reason of the extreme lightness and flexibility or yielding nature of the parts the best vibratory effects are had from the diaphragm and stylus.

For a full and clear understanding of our invention, such as will enable others skilled in the art to construct and use the same, reference is had to the accompanying drawings, in which Figure 1 is a sectional view taken through the body of the preferred form of our improved instrument, a phonographic-record cylinder being illustrated diagrammatically; and Fig. 2 is a plan view of the instrument as seen looking at Fig. 1 from the lower righthand corner of the drawings toward the upper left-hand corner thereof.

Referring now to the drawings in detail and first to Fig. 1, (1 represents the diaphragm, made, preferably, of thin glass and secured at its outer edge by a ring of cement, glue, or otherwise to the outer edge of a light metallic diaphragmsupporting disk p, provided at its center with an opening, there. being sulficient space between the lower surface of said disk and the diaphragm to give the necessary vibratory effect thereto.

1) represents the body of the instrument, of usual form, to which the diaphragm s is pivotally attached at c.

f represents the sound-conveying tube, having a flange-shaped supporting part at its lower end, as shown, and secured in the usual manner by a screw-threaded ring a, which when in position holds the tube f securely within the body I), with the flange against a ring or washer c.

t represents independent sound-conveying means in the nature of a thimble having the form or shape of the frustum'of a cone and provided at its lower end with a ball-shaped extension 71, adapted to fit within a corre- The operation is as folloivszVVhen the phog nograph-record cylinder is rotated from left to right in the direction of the curved arrow and sounds are emitted in the direction of the straight arrow into the tubefand thimble t, the diaphragm is caused to vibrate in the usual manner, and by reason of the pivoted support thereof and attached parts, together with the ball-and-socket support ofthe conical sound-conveying thimble t in the lower end of the tube f, the stylus s readily partakes of such movements as the inequalities of the surface of the record may possess, and at the same time the thimble't adjusts itself with relation both to the tubefand the diaphragm-supporting disk 1) and in such manner that none of the sound-waves which enter the tubef are permitted to escape; but all of them are concentrated upon the center of the diaphragm.

It will be appreciated that owing to the extreme lightness of all of the parts the full vibratory efiect of the diaphragm d is imparted to the stylus 8 under all conditions of usage, said diaphragm not being under any abnormal strain, but susceptible of delicate movements for the most delicate sounds.

We do not limit ourinvention to the especial details of construction shown and hereinbefore described, as we believe we are broadly entitled to claim a phonographic sound-recording instrument in which the diaphragm is yieldingly secured to the body of the instrument and the-sound-conveying means is in turn yieldingly attached to the diaphragmsupporting disk, said sound-conveying means being free or independent of the body of the instrument itself, whereby extreme lightness and flexibility of the operative parts of the instrument are secured, and our claims are generic as to this feature. Although we have shown the diaphragm-supporting disk 9 pivotally secured to the body or frame of the instrument, we contemplate other yielding means of support, the essence of our invention lying broadly in utilizing the principle of supporting the diaphragm and its immediate attachments independently of the frame of the instrument in such manner that the recording-stylus follows the inequalities of the record-cylinderand is subjected to a minimum amount of pressure therefrom, while substantially all of the sound-waves are conveyed directly to the diaphragm by reason of the yielding nature of the parts between the diaphragm and the sound-conveying tube; nor do we limit our invention in its application to a recording-phonograph, as it may obviously be used in connection with sound-reproducing phonographs, and our claims are designed to inlcude all such structures.

Having thus describedourinvention, what We claim, and desire to secure by Letters Patent of the United States, is-

1. A phonograph having its diaphragmsupporting disk, and diaphragm and recording-stylus carried thereby, secured yieldingly to the body of the instrument; in combination with sound-conveying means carried directly by the diaphragm-supporting disk and yieldingly attached thereto with its free end extending into the sound-conveying tube carried by the body of the instrument, substantially as described.

2. A phonograph having its diaphragmsupporting disk, and diaphragm and recordstylus pivotally secured to the body of the instrument; in combination with sound-conveying means yieldingly attached to the diaphragm-supporting disk and extending up ward with its upper end free to move'in the lower end of the sound-conveying tube, the arrangement being such that all of the soundwaves which enter the sound-conveying tube will be concentrated upon the diaphragm,substantially as described.

4. A phonograph having its diaphragm, diaphragm-supporting disk and recordingstylus pivotally secured to the body of the instrument; in combination with a conicalshaped thimble having its lower end yieldingly attached to the diaphragm-supporting disk and its upper end free to move in the lower end of the sound-conveying tube, substantially as described.

, 5. A phonograph having its diaphragm, diaphragm-supporting disk and recordingstylus pivotally secured to the body of the instrument; in combination with a conicalshaped thimble connected by ball-and-socket joint to the diaphragm-supporting disk with its upper end free to move in the lower end of the sound-conveying tube, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

HENRY J. HAGEN. GEORGE LWICINTOSH.

W'itnesses:

C. J. KINTNER, J. NEWCOMB BLACKMAN. 

